#pragma once
#include <iostream>
#include <functional>
#include <vector>
#include <ctime>
#include <unistd.h>
using namespace std;

typedef function<void()> task_t;

void Download()
{
    cout << "this is download" << endl;
}

void PrintLog()
{
    cout << "this is PrintLog" << endl;
}

void PushVideoStream()
{
    cout << "this is pushvideo" << endl;
}

class Init
{
public:
    // 任务码
    const static int g_download_code = 0;
    const static int g_printlog_code = 1;
    const static int g_push_videostream_code = 2;
    // 任务集合
    vector<task_t> tasks;

public:
    Init()
    {
        tasks.push_back(Download);
        tasks.push_back(PrintLog);
        tasks.push_back(PushVideoStream);
        srand(time(nullptr));
    }
    bool CheckSafe(int code)
    {
        if (code >= 0 && code < tasks.size())
            return true;
        else
            return false;
    }
    void RunTask(int code)
    {
        return tasks[code]();
    }
    int SelectTask()
    {
        return rand() % tasks.size();
    }
    string ToDesc(int code)
    {
        switch (code)
        {
        case g_download_code:
            return "Download";
        case g_printlog_code:
            return "PrintLog";
        case g_push_videostream_code:
            return "PushVideoStream";
        default:
            return "Unknow";
        }
    }
};

Init init;